A Practical Crosstalk Reduction Technique Applied to High-Density Hard Disk Interconnecting Assembly Traces

Author

Osaklang, S. ; Kruesubthaworn, A. ; Sivaratana, R. ; Supnithi, Pornchai ; Ungvichian, V. ; Kaewrawang, Arkom ; Siritaratiwat, A.

Author_Institution

KKU-Seagate Cooperation Res. Lab., Khon Kaen Univ., Khon Kaen, Thailand

Volume

47

Issue

10

fYear

2011

Firstpage

4014

Lastpage

4017

Abstract

A novel electromagnetic (EM) decoupling and crosstalk reduction technique applied to hard disk drive is presented. Grooves are introduced with different depths between conductors of the trace suspension assembly interconnects (TSAI). By using commercial EM simulation software, an induced voltage from an unwanted external field on TSAI is reduced in relation with groove depth. As much as 12.5-dB decoupling is observed for 25%-75% groove depths. The crosstalk reduction obtained over 1.0 dB for 1-4 GHz frequency band is achieved and the transmission bandwidth has increased by 20% at 75% groove depth. Hence, additional grooves will strengthen the immunity of TSAI at the reader sensor against external field disturbances as well as offer an improved transmission performance.

Keywords

crosstalk; disc drives; electromagnetic interference; hard discs; assembly traces; crosstalk reduction technique; electromagnetic decoupling; grooves; hard disk drive; high-density hard disk; trace suspension assembly interconnects; Bandwidth; Couplings; Crosstalk; Dielectrics; Educational institutions; Electromagnetic interference; Magnetic heads; Crosstalk; electromagnetic coupling; electromagnetic interference; trace suspension assembly interconnects;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.2011.2148193

Filename

6028130